How to Record a Lesson on a Mac: A Teacher's Setup

The quickest way to record a lesson on a Mac is already built in. Open your slides, press ⌘⇧5 (Command-Shift-5), choose Record Entire Screen, pick your microphone under Options, and click Record. That captures your slides and your voice for free, and it works for a short explainer or a full lecture.

You might also want your face in a corner, cleaner audio and short edited clips. This page shows a simple teacher setup for that in Screen Bolt, the recorder we make. It also explains what Screen Bolt's free version can and can't export, because its 3-minute limit changes how you should plan a lesson.

What a good recorded lesson looks like

A recorded lesson doesn't need to look like a TV production. Students need to be able to follow it and rewatch it.

• One idea per video. A student looking for "how to find the common denominator" should land on that part, not scrub through a 40-minute class.
• Readable slides. Large text and high contrast still read well on a phone or a small laptop screen. Our guide to making text readable in screen recordings covers font sizes and zoom.
• A clear, even voice. Students forgive plain visuals. They won't sit through hiss, echo, or audio that jumps between quiet and loud.
• Your face, small. A webcam in the corner makes the lesson feel like you're teaching it. It shouldn't cover the content.
• No private information. Student names, emails, the gradebook tab and notifications stay out of the video.
• An MP4 file. MP4 plays on almost any computer, phone or Chromebook.

Record a lesson on your Mac with the built-in tools

macOS can record your screen and microphone for free. For many teachers, this is enough.

1. Open your slides and get them ready on screen.
2. Press ⌘⇧5 to open the Screenshot toolbar.
3. Click Record Entire Screen or Record Selected Portion.
4. Click Options and choose your microphone. You can also change where the file is saved here.
5. Click Record.
6. To stop, click the stop button in the menu bar or press ⌃⌘Esc (Control-Command-Escape).

The recording is saved as a .mov file, on your Desktop unless you picked another folder. If you can't find it, see where screen recordings go on a Mac.

Add your webcam with QuickTime Player

The Screenshot toolbar can't add a webcam itself. The usual workaround is to show your camera in a floating window and record the screen with that window visible:

1. Open QuickTime Player and choose File ▸ New Movie Recording. Your camera preview appears. Don't press its record button.
2. Choose View ▸ Float on Top so the camera window stays above your slides.
3. Resize the camera window and drag it to a corner.
4. Press ⌘⇧5 and record your screen as above.

What the built-in route can't do

• It can't clean up your voice after recording.
• The webcam is just a window on screen. You can't move, resize or hide it after you've recorded.
• Editing is basic. QuickTime's Edit ▸ Trim cuts the start and end.
• Recording your Mac's own sound, for example a video clip you play during the lesson, takes extra setup. See how to record internal audio on a Mac.

For a quick weekly explainer with slides and voice, none of this may matter. Our QuickTime screen recording guide covers the built-in route in more detail.

Set up slides and webcam in Screen Bolt

Screen Bolt records your screen, webcam and microphone together, then opens the recording in an editor where you place the webcam, clean up your voice and cut mistakes. It needs macOS 14 Sonoma or later.

macOS asks for Screen Recording permission the first time Screen Bolt needs it, at first launch or at your first recording. On macOS 14, quit and reopen Screen Bolt after granting it. Camera access is requested when you first turn a camera on, and microphone access when you first record with the mic on. The getting started page covers this setup.

To record a lesson:

1. Open Screen Bolt. A small floating recording bar appears.
2. Choose what to record:
   • Click Display if you present your slides full screen. If you have more than one display, Display opens a menu of your screens. Pick the one showing the slides, not the one with your presenter notes.
   • Click Window if you teach from one app window, such as a browser, a PDF or your slides in edit view. Click the window in the picker, then click Record Window (or press Return) to confirm. Screen Bolt records only that window, even if something covers it.
3. Click Camera and choose your webcam. A round preview bubble appears on screen so you can check your framing. The bubble isn't recorded.
4. Click Mic and choose your microphone. A thin level meter on the Mic button shows that it's picking up your voice.
5. If you'll play a video or audio clip during the lesson, click Audio and choose Record system audio from all apps.
6. Click the red record button and teach.
7. Click Stop when you're done. The editor opens with your recording.

Advance slides with the keyboard, not the mouse

Screen Bolt turns mouse clicks into automatic zooms. That helps in a software demo. In a lesson, if you click to advance every slide, the video zooms in on each click. Use the arrow keys or Space to move through Keynote, PowerPoint or Google Slides instead, because keystrokes don't create zooms.

If you want no automatic zooms at all, open the Record menu and turn off Automatically create zooms before you record.

Place the webcam after recording

In the editor, open the Webcam panel (⌘3). New projects put the camera in the bottom-left corner as a rounded card. You can change:

• Position: Bottom Left, Bottom Right, Top Left or Top Right. Pick the corner your slides leave empty.
• Size: from 8% to 40%.
• Aspect (Native, 1:1, 4:5 or 16:9) and Roundness (0–100%) to change the shape.

To open the lesson with your face filling the frame, use Fullscreen Moments. Move the playhead to where it should start and press I, move to the end and press O, then click Add from Marked Range in the Webcam panel. The camera takes over the whole frame for that stretch, then returns to its corner.

Show handwritten work with a second camera

If you work through problems on paper, add a second camera. An iPhone connected through Continuity Camera works, mounted on a stand and pointed at your desk. Turn on your main camera, then choose the iPhone under Second camera in the Camera menu. Each camera records to its own file. In the editor, turn on Enable Camera 2 in the Webcam panel to place and style it. Our guide to recording with two cameras has the full setup.

Get clean audio in an ordinary room

Students can follow a plain slide, but they give up on a voice they can't hear clearly.

Fix the room first. Record away from the projector fan and the hallway door. Curtains, a rug or a full bookshelf cut echo in a bare classroom. Keep the microphone close to your mouth and at the same distance throughout. A headset or a USB mic usually beats the Mac's built-in mic. Our guide to choosing a microphone for screen recording compares the options.

Test before a long take. Record 10 seconds and play it back, or use our free microphone test. In Screen Bolt, if the chosen mic can't be opened (for example, because another app is using it), the recording carries on without your voice and an amber banner under the bar says why. Look for it before you teach a whole lesson.

Clean it up in the editor. Open the Audio panel (⌘4) and go to Audio Enhance:

1. Turn on Auto Audio Enhance to switch on all three options at once, or turn them on one by one.
2. Noise Reduction reduces steady background noise such as fans and hum.
3. Volume Normalization brings your voice to a consistent loudness (about −16 LUFS), so students don't have to adjust the volume between videos.
4. Voice Clarity cuts low rumble, adds a little presence and evens out loud and quiet words.

All three are off by default. They apply only to the microphone track and run on your Mac. If macOS Voice Isolation was on when you recorded, Screen Bolt skips its own noise reduction for that recording, since your voice was already cleaned at capture. See using Voice Isolation on a Mac.

Keep each lesson short

Short videos are easier to rewatch, easier to re-record when something goes wrong, and quicker to upload. Plan a lesson as a series of clips, one per concept: "Introduction", "Worked example 1", "Practice question".

Screen Bolt tools that help:

• Pause sits in the recording bar while you record. Use it between sections to find your next slide or take a breath. The paused gaps are left out of the recording.
• Discard and restart deletes a fumbled take and puts you back at setup, without creating a project.
• Script opens a teleprompter for your lesson notes. Its window isn't recorded, and in Auto Scroll mode it starts scrolling when the recording starts. Keys only reach the window that's in focus, so if you advance slides with the keyboard, keep your slides app focused rather than the teleprompter. More in reading a script while recording.
• Cuts remove a mistake in the middle. Press I and O to mark the range, then click Cut I-O. To split a clip, press S at the playhead. The editing help page covers the timeline.

Free vs paid: what each option gets you

The free version's 3-minute limit, in practice

The free version records for as long as you like and includes every editing tool. The limits apply when you export: 3 minutes maximum, 720p, a small watermark, and no GIF export.

One detail matters for planning. The export check uses the length of the whole recording, not the trimmed result. If you record a 20-minute lesson and cut it down to a 2-minute clip, the free version still refuses to export it. To stay within the free version, make each segment its own recording of under 3 minutes. One concept per clip suits short lessons anyway.

720p is fine for slides with large text. Small text, like spreadsheet cells or code, is sharper at 1080p (1920×1080 instead of 1280×720).

Which to pick

• Pick the built-in tools if you record slides and voice, rarely edit, and don't mind a fixed webcam window.
• Pick Screen Bolt's free version if your lessons fit in clips under 3 minutes and you want the webcam overlay and voice clean-up. The watermark is the trade-off.
• Pick Screen Bolt Pro if you record full-length lectures, need 1080p for detailed content, or don't want a watermark on material you share with families.

For other free recorders, see our best free screen recorders for Mac. Screen Bolt's pricing table lists Free and Pro side by side, and Pro has a 14-day money-back guarantee.

Keep student information out of the video

Before you hit record, close the gradebook, your email and any chat apps, and turn on a Focus such as Do Not Disturb from Control Center so notifications don't appear. Recording a single window instead of the whole display also keeps other apps out of the video.

If something slips through, Screen Bolt can blur it in the editor:

1. Open the Effects panel and find Blur / Privacy.
2. Under Auto-Detect Sensitive Text, add student names or your school's email domain under Custom keywords (comma separated). Email addresses are detected without keywords. Turn on Also detect phone numbers if you need it.
3. Run the scan. Each match becomes a blur region that follows the text through zooms and scrolling.
4. Review every region on the Blur track before you export.

Detections aren't re-timed if you cut, reorder clips or change speed after the scan. Do your editing first, then scan, and check the result.

For anything the scan misses, click Add Blur Region (or press B). It adds a 5-second blur at the playhead. Set its place and size with the Region X / Y / W / H fields and its length with Duration. Style offers Gaussian, Pixelate and Solid Color. Our guide to hiding sensitive information goes through more options.

Export and share with students

1. In the editor, click Export in the toolbar.
2. Under Format, choose MP4.
3. Under Quality, choose 720p (free version) or 1080p (Pro).
4. Check the summary line for the estimated file size.
5. Under Save to, click Change… if you don't want the file on the Desktop.
6. Click Export. Finder shows the file when it's done.

The exported file is named with the date and time. Rename it in Finder before uploading ("Unit 3 - 02 Fractions.mp4") so you and your students can find it later.

If your school platform has an upload size limit, lower the bitrate. Open Settings (⌘,) ▸ Quick export and set Compression to Web. This setting applies to editor exports too. The same tab has Frame rate, which is used for recording as well: slides don't need 60 FPS, so 30 FPS is enough. To estimate a file's size in advance, use our video file size calculator.

Screen Bolt doesn't upload anything or create share links. Your lessons stay on your Mac until you upload the MP4 to your learning platform, a shared drive folder or an unlisted YouTube video. Screen Bolt doesn't produce captions. YouTube can generate automatic captions, but check them for subject terms and names.

Don't use the Share button in the editor toolbar to send a finished lesson. It shares the raw recording, without your cuts, webcam layout or audio clean-up. Always use Export.

Common mistakes and quick fixes

• The lesson zooms on every slide. You clicked to advance slides. Right-click the zoom track and choose Delete All Zoom Regions, or turn off Auto Zoom on Click in the Zoom panel (⌘5), which disables every zoom in the preview and the export. Next time, use the arrow keys.
• The webcam covers slide text. Move it to an empty corner or reduce Size in the Webcam panel.
• The free version won't export a trimmed clip. The 3-minute check uses the full recording. Re-record the segment on its own.
• No voice in the recording. Check the mic level meter before recording and look for the amber banner. Quit other apps that might be using the mic. See Mac screen recording has no sound for more fixes.
• Students got the uncut version. It was sent with Share. Export an MP4 and send that file instead.
• A notification appeared mid-lesson. Blur it in the editor, and turn on Do Not Disturb before your next recording. Our checklist for preparing your Mac for a clean recording covers the rest.

If you're building a full course rather than weekly lessons, our guide to recording an online course on a Mac covers planning modules and keeping a consistent look across many videos. For lectures where you're on camera most of the time, see recording a presentation with webcam on Mac.